Electric Field and Potential Calculations I
Solve the following problems on the back of this page or on your own sheet of paper. Show all work and equations. Circle your final answers!
1. A positive charge of 1.7 x 10-5 C experiences a force of 0.28 N when located at a certain point in an
electric field. What is the electric field’s intensity at that point?
2. How strong would an electric field have to be if a positive charge of 7.4 x 10-3 C experiences a force of
5.6 x 10-2 N when it is placed in the field?
3. The electric field intensity between two charged plates is 1.5 x 103 N/C. The plates are 0.080 m apart.
What is the potential difference, in volts, between the plates?
4. A voltmeter indicates that the difference in potential between two plates is 55.0 V. The plates are 0.022 m
apart. What electric field intensity exists between them?
5. What work is done when 47 C of charge is raised in potential by 5.3 V?
6. If 280 J of work are done to move 3.0 coulombs of charge from a positive plate to a negative plate, what
voltage difference exists between the plates?
7. A 6.0 V battery does 4500 J of work transferring charge. How much charge is transferred?
8. A force of 0.59 N is required to move a charge of 4.3 x 10-7 C in an electric field between two points which
are 0.26 m apart. What is the potential difference (voltage) between the points?
9. A rubber rod is charged to 3200 V, and the amount of charge on the rod is 8.4 x 10-6 C, then the potential
energy of the charge is _____J.
10. How far is a 9.1 x 10-5 C charge moved in an electric field if the voltage over the distance is 5700 V and the
force required is 0.46 N?